Add node 8.9.1, remove node 8.8.0
Add node 8.9.1, remove node 8.8.0

source url: https://nodejs.org/dist/v8.9.1/node-v8.9.1.tar.gz
source sha256: 32491b7fcc4696b2cdead45c47e52ad16bbed8f78885d32e873952fee0f971e1

[#152660369]

cloudfoundry/nodejs-buildpack,cloudfoundry/nodejs-buildpack,cloudfoundry/nodejs-buildpack,cloudfoundry/nodejs-buildpack